Hanna Standard pH 4.01 Buffer Solution, 500 ml

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Product Code: HI7004L The Hanna HI7004L pH 4.01 Calibration Solution is a high-quality buffer solution formulated for accurate calibration of pH meters and electrodes. With a nomin al pH value of 4.01 at 25°C and an accuracy of ±0.01 pH, it provides a dependable calibration standard for laboratory, environmental, water quality and field-testing applications. The HI7004L is supplied in a 500 mL airtight bottle with a tamper-proof seal. Each bottle is identified with a lot number and expiration date. A temperature chart showing the actual buffer pH at different temperatures is printed on the bottle. This pH 4.01 buffer is particularly useful when calibrating instruments used to measure acidic samples. It can be used as part of a multi-point calibration together with Hanna pH 7.01 and pH 10.01 buffers where appropriate. Accuracy of ±0.01 pH at 25°C 500 mL bottle NIST-traceable formulation Airtight bottle with tamper-proof seal Lot number and expiration date printed on bottle Temperature/pH reference chart printed on bottle Suitable for laboratory and field pH meter calibration Does not contain dyes that can stain the reference cell of a pH electrode Show more